Method of imaging and developing positive-working imageable elements
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Invention Example 1
An imageable element of the present invention was prepared in the following manner using the following positive-working infrared radiation-sensitive composition formulation:
Polymer A0.9020 gLB 9900 (49% in PM)0.1220 gS 0094 IR Dye0.0300 gCrystal Violet0.0240 gSudan Black B0.0240 gDMABA0.1560 gPolyfox ® PF 652 (10% in PM)0.0360 gMEK 4.83 gPM 8.88 g
The formulation was filtered and applied to an electrochemically roughened and anodized aluminum substrate that had been subjected to a treatment with an aqueous solution of sodium phosphate / sodium fluoride by means of common methods and the resulting imageable layer coating was dried for 30 seconds at 100° C. in Glunz&Jensen “Unigraph Quartz” oven. The dry coverage of the imageable layer was about 1.5 g / m2. The single imageable layer was the outermost layer of the imageable element. The imageable element was conditioned with interleave paper for two days at 60° C. and 25% RH.
The resulting imageable elem...
Invention Example 2
Imageable elements were prepared, imaged, and processed using the same general procedure described above for Invention Example 1, this time processing the imaged element for 60 seconds and using the following infrared radiation-sensitive composition formulation:
Polymer A0.7460 gLB 9900 (49% in PM)0.0490 gS0094 IR Dye0.0240 gCrystal Violet0.0190 gSudan Black B0.0190 gDMABA0.1250 gPolyfox ® PF 652 (10% in PM)0.0290 gMEK 3.86 gPM 7.13 g
The results obtained for Invention Example 2 are shown below in TABLE I.
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